Oregon Ash

Encyclopedia : O : OR : ORE : Oregon Ash

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The Oregon Ash (Fraxinus latifolia), is a member of the ash genus Fraxinus, native to western regions of its namesake, the state of Oregon in the United States of America.

The Oregon Ash can grow to 25 meters in height, with a trunk diameter of 30-80cm. The leaves are pinnate, 12-33 cm long, with 5-9 leaflets, each leaflet ovate, 6-12 cm long and 3-4 cm broad, and often show signs of disease and brown rot, even on otherwise healthy plants. The fruit is a samara, 3-5 cm long including the wing.

The Oregon Ash can be found on the west side of the Cascade Range from southwestern British Columbia to central California. The tree prefers damp, loose soils, and grows from sea level to 900 meters in elevation, up to 1700 m in the south of the range in California. In central southern California, it intergrades with the Velvet Ash F. velutina of southern California east into Arizona.

References

• [Jepson Flora Project: Fraxinus latifolia]
• [Plants of British Columbia: Fraxinus latifolia]

 

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